<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_CodeGenerator
 * @subpackage PHP
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: DefaultValue.php 18951 2009-11-12 16:26:19Z alexander $
 */

/**
 * @see Zend_CodeGenerator_Php_Abstract
 */
require_once 'Zend/CodeGenerator/Php/Abstract.php';

/**
 * @category   Zend
 * @package    Zend_CodeGenerator
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_CodeGenerator_Php_Property_DefaultValue extends Zend_CodeGenerator_Php_Abstract
{
	/**#@+
	 * Constant values
	 */
	const TYPE_AUTO     = 'auto';
	const TYPE_BOOLEAN  = 'boolean';
	const TYPE_BOOL     = 'bool';
	const TYPE_NUMBER   = 'number';
	const TYPE_INTEGER  = 'integer';
	const TYPE_INT      = 'int';
	const TYPE_FLOAT    = 'float';
	const TYPE_DOUBLE   = 'double';
	const TYPE_STRING   = 'string';
	const TYPE_ARRAY    = 'array';
	const TYPE_CONSTANT = 'constant';
	const TYPE_NULL     = 'null';
	const TYPE_OTHER    = 'other';
	/**#@-*/

	/**
	 * @var array of reflected constants
	 */
	protected static $_constants = array();

	/**
	 * @var mixed
	 */
	protected $_value = null;

	/**
	 * @var string
	 */
	protected $_type  = self::TYPE_AUTO;

	/**
	 * @var int
	 */
	protected $_arrayDepth = 1;

	/**
	 * _init()
	 *
	 * This method will prepare the constant array for this class
	 */
	protected function _init()
	{
		if(count(self::$_constants) == 0) {
			$reflect = new ReflectionClass(get_class($this));
			self::$_constants = $reflect->getConstants();
			unset($reflect);
		}
	}

	/**
	 * isValidConstantType()
	 *
	 * @return bool
	 */
	public function isValidConstantType()
	{
		if ($this->_type == self::TYPE_AUTO) {
			$type = $this->_getAutoDeterminedType($this->_value);
		}

		// valid types for constants
		$scalarTypes = array(
		self::TYPE_BOOLEAN,
		self::TYPE_BOOL,
		self::TYPE_NUMBER,
		self::TYPE_INTEGER,
		self::TYPE_INT,
		self::TYPE_FLOAT,
		self::TYPE_DOUBLE,
		self::TYPE_STRING,
		self::TYPE_CONSTANT,
		self::TYPE_NULL
		);

		return in_array($type, $scalarTypes);
	}

	/**
	 * setValue()
	 *
	 * @param mixed $value
	 * @return Zend_CodeGenerator_Php_Property_DefaultValue
	 */
	public function setValue($value)
	{
		$this->_value = $value;
		return $this;
	}

	/**
	 * getValue()
	 *
	 * @return mixed
	 */
	public function getValue()
	{
		return $this->_value;
	}

	/**
	 * setType()
	 *
	 * @param string $type
	 * @return Zend_CodeGenerator_Php_Property_DefaultValue
	 */
	public function setType($type)
	{
		$this->_type = $type;
		return $this;
	}

	/**
	 * getType()
	 *
	 * @return string
	 */
	public function getType()
	{
		return $this->_type;
	}

	/**
	 * setArrayDepth()
	 *
	 * @param int $arrayDepth
	 * @return Zend_CodeGenerator_Php_Property_DefaultValue
	 */
	public function setArrayDepth($arrayDepth)
	{
		$this->_arrayDepth = $arrayDepth;
		return $this;
	}

	/**
	 * getArrayDepth()
	 *
	 * @return int
	 */
	public function getArrayDepth()
	{
		return $this->_arrayDepth;
	}

	/**
	 * _getValidatedType()
	 *
	 * @param string $type
	 * @return string
	 */
	protected function _getValidatedType($type)
	{
		if (($constName = array_search($type, self::$_constants)) !== false) {
			return $type;
		}

		return self::TYPE_AUTO;
	}

	/**
	 * _getAutoDeterminedType()
	 *
	 * @param mixed $value
	 * @return string
	 */
	public function _getAutoDeterminedType($value)
	{
		switch (gettype($value)) {
			case 'boolean':
				return self::TYPE_BOOLEAN;
			case 'integer':
				return self::TYPE_INT;
			case 'string':
				return self::TYPE_STRING;
			case 'double':
			case 'float':
			case 'integer':
				return self::TYPE_NUMBER;
			case 'array':
				return self::TYPE_ARRAY;
			case 'NULL':
				return self::TYPE_NULL;
			case 'object':
			case 'resource':
			case 'unknown type':
			default:
				return self::TYPE_OTHER;
		}
	}

	/**
	 * generate()
	 *
	 * @return string
	 */
	public function generate()
	{
		$type = $this->_type;

		if ($type != self::TYPE_AUTO) {
			$type = $this->_getValidatedType($type);
		}

		$value = $this->_value;

		if ($type == self::TYPE_AUTO) {
			$type = $this->_getAutoDeterminedType($value);

			if ($type == self::TYPE_ARRAY) {
				$rii = new RecursiveIteratorIterator(
				$it = new RecursiveArrayIterator($value),
				RecursiveIteratorIterator::SELF_FIRST
				);
				foreach ($rii as $curKey => $curValue) {
					if (!$curValue instanceof Zend_CodeGenerator_Php_Property_DefaultValue) {
						$curValue = new self(array('value' => $curValue));
						$rii->getSubIterator()->offsetSet($curKey, $curValue);
					}
					$curValue->setArrayDepth($rii->getDepth());
				}
				$value = $rii->getSubIterator()->getArrayCopy();
			}

		}

		$output = '';

		switch ($type) {
			case self::TYPE_BOOLEAN:
			case self::TYPE_BOOL:
				$output .= ( $value ? 'true' : 'false' );
				break;
			case self::TYPE_STRING:
				$output .= "'" . addcslashes($value, "'") . "'";
				break;
			case self::TYPE_NULL:
				$output .= 'null';
				break;
			case self::TYPE_NUMBER:
			case self::TYPE_INTEGER:
			case self::TYPE_INT:
			case self::TYPE_FLOAT:
			case self::TYPE_DOUBLE:
			case self::TYPE_CONSTANT:
				$output .= $value;
				break;
			case self::TYPE_ARRAY:
				$output .= 'array(';
				$curArrayMultiblock = false;
				if (count($value) > 1) {
					$curArrayMultiblock = true;
					$output .= PHP_EOL . str_repeat($this->_indentation, $this->_arrayDepth+1);
				}
				$outputParts = array();
				$noKeyIndex = 0;
				foreach ($value as $n => $v) {
					$v->setArrayDepth($this->_arrayDepth + 1);
					$partV = $v->generate();
					$partV = substr($partV, 0, strlen($partV)-1);
					if ($n === $noKeyIndex) {
						$outputParts[] = $partV;
						$noKeyIndex++;
					} else {
						$outputParts[] = (is_int($n) ? $n : "'" . addcslashes($n, "'") . "'") . ' => ' . $partV;
					}

				}
				$output .= implode(',' . PHP_EOL . str_repeat($this->_indentation, $this->_arrayDepth+1), $outputParts);
				if ($curArrayMultiblock == true) {
					$output .= PHP_EOL . str_repeat($this->_indentation, $this->_arrayDepth+1);
				}
				$output .= ')';
				break;
			case self::TYPE_OTHER:
			default:
				require_once "Zend/CodeGenerator/Php/Exception.php";
				throw new Zend_CodeGenerator_Php_Exception(
                    "Type '".get_class($value)."' is unknown or cannot be used as property default value."
                    );
		}

		$output .= ';';

		return $output;
	}
}
